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Sungrow reveals PV inverters at Tokyo Smart Grid Expo

Steve Rogerson
March 6, 2019

Chinese inverter company Sungrow unveiled a PV inverter, turnkey energy storage systems (ESS) and floating PV systems tailored for Japanese solar market at last week’s Smart Grid Expo in Tokyo.
Backed by the Basic Energy Plan, solar energy is one of the main pillars of renewable energy in Japan. Sungrow says it is now providing a comprehensive product portfolio to address this market.
The PV inverter series includes 1.5kV DC systems, in particular the SG3400HV-MV turnkey station, which was introduced at the Tokyo show for the first time and has been deployed at gigawatt volume globally. It is designed for higher yield with a three-level topology and maximum conversion efficiency up to 99%.
Featuring a DC:AC ratio of 1.5, the turnkey product integrates a 3.4MW central inverter, MV transformer and switchgear in a 6m container, which saves on initial investment and future operating and maintenance costs. The company's SG111HV 1.5kV DC string inverter garnered attention at the show as well.
As a supplement to Sungrow’s string inverter pipeline led by the SG49K5J and SG33K3J, the SG5K5J string inverter is for 50kW solar systems. The 5.5kW string inverter with 2MPPTs is equipped with a DC:AC ratio of up to 220%, fulfilling local grid demands.
Given the power constrictions in the Japanese market, Sungrow also presented its DC-coupled turnkey ESS, which integrates energy storage converters, lithium-ion battery banks and battery management systems. In 2018, Sungrow shipped its turnkey ESS to a 30MWh PV plus storage project in Japan, achieving 24 hours of continuous power yield. With over 720 application cases, Sungrow ESS is used worldwide.
Sungrow's floating systems, covering one third of the global market share, were also on display as the organisation expands its portfolio. Its flexible products have been applied in several projects, including a floating solar plant in Fukushima, Japan.
"We are determined to explore new solar markets while consolidating our leading role in the established ones, in particular Japan, Europe and the USA," said Jack Gu, president of Sungrow’s PV and energy storage division. “Meanwhile, we will keep relentlessly pursuing technical innovations to maximise LCOE even though Japan's FIT cuts have reached another critical point. Defined by superior quality and unprecedented service, our products are installed in over six continents."